Coal and ash sifter



{No-Model.)

C. H. FERGUSON & A. BAKER.

GOAL AND ASH SIFTER.

No. 289,820. vPatented Deo. 1l, 1883.

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UNrrEn STATES PATENT? @Erica CHARLES H. FERGUSON AND ALFRED BAKER, OF BOSTON, MASSACHUSETTS.

COA-L AND ASH SIFTER.

SPECIFICATION forming part of Letters Patent No. 289,820, dated December 11, V1883, Application filed March 29, 1883. (No model.)

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Be it known that we, CHnRLEs H. FERGU- soN and ALFRED BAKER, both citizens of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Coal and Ash Sifter, of which the following is a specification, reference being had to the accompanying drawings.

Our invention relates to sifters for sift-ing coal and ashes,- aud it consists in the several parts, constructed, arranged, andcombined as hereinafter set forth, and specifically pointed out in the claims.

In the drawings, Figurelisa side elevation of a coal and ash sifter embodying our invention. Fig. 2 is a vertical section taken on line Fig. his a vertical section taken on line 2 2 in Fig. 2. A

The box containing the working parts consists of the upper part, A, and lower part, B, the former being hinged to the latter at a. The part A is formed by the sides b b, ends c and d, and top e, the part B by the sides f f and ends g and 72. ln the upper part, A, is a sieve in the form of a barrel or drum, C, ta-

pering, as shown, and formed of woven wire properly stayed, or of suitable perforated material. This barrel is set inclined, and h'as a iiange, t', at its upper and larger end, which` iits to revolve in a suitable bearing formed about an opening in the end c. There is a shaft, D, attached to the lower and smaller end of the barrel C, which is tted to revolve in a bearing in the end d. The inner end of the shaft D is connected to the barrel by means of a disk, E, and rods j, which join the disk and the barrel and act as stays for the latter. Thus the barrel C is supported by means of the bearings in the ends c and d. There is an open space between the disk E and the small end of the barrel, as shown.

In the part B of the box is asieve, F, in the form of a spout, made of woven wire or suitable perforated material. This sieve is set inclined, as shown, pivoted at its upper edge on a rod, k, and open at the top Z. The lower end extends into or through a suitable opening in the end g.

In the shaft D is a crank, G, to be turned by hand, and a shorter crank, m. Pvoted on the crank m is one end of a connecting-rod, H, which is pivoted at the other end to a rod or bar, I. This bar is pivoted, midway its length, on a rod, J, and at its inner end to the bottom of the sieve F at a.

Fastened on the end c of the upper part of I the box is a hopper, K, to receive the coal and ashes to be sifted. This hopper is so formed as to have a flange, o, which extends a suitable distance into the barrel C, so as to 'guide fastened down on the part B or held at different inclinations relative thereto, whereby the barrel C is held at any desired inclination.`

For operation, the vsifter is placed over a suitable place of deposit for the ashes, and the coal and ashes to be sifted are put into the hopper K. On turning the crank G the barrel C is`revolved and the sieve F vibrated. The coal passes through the barrel C, falls into the sieve F at Z, and passes out at the lower end thereof. The ashes fall through the openings in the sides and bottom of thebarrel C and sides and bottom of the sieve F, and through the open bottom of the box. A shield, M, is iixed between the barrel C and the sieve F. This shield is of such shape and is so located that the ashes falling from the barrel C will not drop onto the sieve F, but will be so directed as to fall between the sieve F and the sides of the box.

W'e claim as our inventionl. The combination of the sieve C, tapering and inclined, the smaller end being lower than thelarger end, and means for revolving the same, with the sieve F, pivoted as at k, and means whereby it may be vibrated, substantially as set forth.

2. The combination of the tapering sieve C, having flange i at its larger end, the boxAB, having bearings for iiange 'i and shaft D, the shaft D, having crank m, the pivoted bar I, and the pivoted sieve F, substantially as specifled.

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2 esame 3. The combination of sieve C, sieve F, shaft having a bearing in the end c for a flange, fi,

D, crank; m, conneetingrod H, and pivoted at the larger end of a sieve, C, and a bearing bar I, substantially as set forth. in the end d for a shaft, D, connected Withthe 15 4. The combination of the hopper K, sieve smaller end of said sieve, the hopper K, ro-

. 5 C, tapering and inclined, the smaller end betary sieve C, sieve F, and means for vibrating ing lower than the larger end, means for rethe sieve F, substantially as speeied. Volving sieve .0, sieve F, means for vibrating A ,T same, and shield M, substantially as speei- IES'KEIFGUSOL' 1o 5. The herein-described ooal and ash sifter, i fitnessesz comprising the box formed of the parts A and I JOSEPH SELIG, B, the part A being hinged to the part B, and EDW. DUMMER. 

